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Annotation of prex/dev/i386/i386/cpufunc.S, Revision 1.1.1.1

1.1       nbrk        1: /*-
                      2:  * Copyright (c) 2008, Kohsuke Ohtani
                      3:  * All rights reserved.
                      4:  *
                      5:  * Redistribution and use in source and binary forms, with or without
                      6:  * modification, are permitted provided that the following conditions
                      7:  * are met:
                      8:  * 1. Redistributions of source code must retain the above copyright
                      9:  *    notice, this list of conditions and the following disclaimer.
                     10:  * 2. Redistributions in binary form must reproduce the above copyright
                     11:  *    notice, this list of conditions and the following disclaimer in the
                     12:  *    documentation and/or other materials provided with the distribution.
                     13:  * 3. Neither the name of the author nor the names of any co-contributors
                     14:  *    may be used to endorse or promote products derived from this software
                     15:  *    without specific prior written permission.
                     16:  *
                     17:  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
                     18:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
                     19:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
                     20:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
                     21:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
                     22:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
                     23:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
                     24:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
                     25:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
                     26:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
                     27:  * SUCH DAMAGE.
                     28:  */
                     29:
                     30: #include <machine/asm.h>
                     31:
                     32:
                     33: ENTRY(breakpoint)
                     34:        int     $3
                     35:        ret
                     36:
                     37: ENTRY(outb)
                     38:        movl    4(%esp), %eax
                     39:        movl    8(%esp), %edx
                     40:        outb    %al, %dx
                     41:        ret
                     42:
                     43: ENTRY(outw)
                     44:        movl    4(%esp), %eax
                     45:        movl    8(%esp), %edx
                     46:        outw    %ax, %dx
                     47:        ret
                     48:
                     49: ENTRY(outl)
                     50:        movl    4(%esp), %eax
                     51:        movl    8(%esp), %edx
                     52:        outl    %eax, %dx
                     53:        ret
                     54:
                     55: ENTRY(inb)
                     56:        movl    4(%esp), %edx
                     57:        xorl    %eax, %eax
                     58:        inb     %dx, %al
                     59:        ret
                     60:
                     61: ENTRY(inw)
                     62:        movl    4(%esp), %edx
                     63:        xorl    %eax, %eax
                     64:        inw     %dx, %ax
                     65:        ret
                     66:
                     67: ENTRY(inl)
                     68:        movl    4(%esp), %edx
                     69:        inl     %dx, %eax
                     70:        ret
                     71:
                     72: ENTRY(outb_p)
                     73:        movl    4(%esp), %eax
                     74:        movl    8(%esp), %edx
                     75:        outb    %al, %dx
                     76:        outb    %al, $0x80
                     77:        ret
                     78:
                     79: ENTRY(inb_p)
                     80:        movl    4(%esp), %edx
                     81:        xorl    %eax, %eax
                     82:        inb     %dx, %al
                     83:        outb    %al, $0x80
                     84:        ret
                     85:
                     86: ENTRY(rdmsr)
                     87:        movl    4(%esp), %ecx
                     88:        rdmsr
                     89:        movl    8(%esp), %ecx
                     90:        movl    %eax, (%ecx)
                     91:        movl    12(%esp), %ecx
                     92:        movl    %edx, (%ecx)
                     93:        ret
                     94:
                     95: ENTRY(wrmsr)
                     96:        movl    4(%esp), %ecx
                     97:        movl    8(%esp), %eax
                     98:        movl    12(%esp), %edx
                     99:        wrmsr
                    100:        ret
                    101:
                    102: ENTRY(cpuid)
                    103:        pushl   %ebx
                    104:        pushl   %edi
                    105:        movl    12(%esp), %eax
                    106:        movl    16(%esp), %edi
                    107:        cpuid
                    108:        movl    %eax, 0(%edi)
                    109:        movl    %ebx, 4(%edi)
                    110:        movl    %ecx, 8(%edi)
                    111:        movl    %edx, 12(%edi)
                    112:        popl    %edi
                    113:        popl    %ebx
                    114:        ret